PMID- 27409167 OWN - NLM STAT- MEDLINE DCOM- 20180122 LR - 20181113 IS - 1949-2553 (Electronic) IS - 1949-2553 (Linking) VI - 7 IP - 31 DP - 2016 Aug 2 TI - Myotubularin-related protein 7 inhibits insulin signaling in colorectal cancer. PG - 50490-50506 LID - 10.18632/oncotarget.10466 [doi] AB - Phosphoinositide (PIP) phosphatases such as myotubularins (MTMs) inhibit growth factor receptor signaling. However, the function of myotubularin-related protein 7 (MTMR7) in cancer is unknown. We show that MTMR7 protein was down-regulated with increasing tumor grade (G), size (T) and stage (UICC) in patients with colorectal cancer (CRC) (n=1786). The presence of MTMR7 in the stroma correlated with poor prognosis, whereas MTMR7 expression in the tumor was not predictive for patients' survival. Insulin reduced MTMR7 protein levels in human CRC cell lines, and CRC patients with type 2 diabetes mellitus (T2DM) or loss of imprinting (LOI) of insulin-like growth factor 2 (IGF2) had an increased risk for MTMR7 loss. Mechanistically, MTMR7 lowered PIPs and inhibited insulin-mediated AKT-ERK1/2 signaling and proliferation in human CRC cell lines. MTMR7 provides a novel link between growth factor signaling and cancer, and may thus constitute a potential marker or drug target for human CRC. FAU - Weidner, Philip AU - Weidner P AD - Department of Medicine II, Universitatsmedizin Mannheim, Medical Faculty Mannheim, Heidelberg University, D-68167 Mannheim, Germany. FAU - Sohn, Michaela AU - Sohn M AD - Department of Medicine II, Universitatsmedizin Mannheim, Medical Faculty Mannheim, Heidelberg University, D-68167 Mannheim, Germany. FAU - Gutting, Tobias AU - Gutting T AD - Department of Medicine II, Universitatsmedizin Mannheim, Medical Faculty Mannheim, Heidelberg University, D-68167 Mannheim, Germany. FAU - Friedrich, Teresa AU - Friedrich T AD - Department of Medicine II, Universitatsmedizin Mannheim, Medical Faculty Mannheim, Heidelberg University, D-68167 Mannheim, Germany. FAU - Gaiser, Timo AU - Gaiser T AD - Institute of Pathology, Universitatsmedizin Mannheim, Medical Faculty Mannheim, Heidelberg University, D-68167 Mannheim, Germany. FAU - Magdeburg, Julia AU - Magdeburg J AD - Department of Surgery, Universitatsmedizin Mannheim, Medical Faculty Mannheim, Heidelberg University, D-68167 Mannheim, Germany. FAU - Kienle, Peter AU - Kienle P AD - Department of Surgery, Universitatsmedizin Mannheim, Medical Faculty Mannheim, Heidelberg University, D-68167 Mannheim, Germany. FAU - Ruh, Hermelindis AU - Ruh H AD - ABIMAS Research Center, Mannheim University of Applied Sciences, D-68163 Mannheim, Germany. FAU - Hopf, Carsten AU - Hopf C AD - ABIMAS Research Center, Mannheim University of Applied Sciences, D-68163 Mannheim, Germany. FAU - Behrens, Hans-Michael AU - Behrens HM AD - Institute of Pathology, Christian Albrecht University, D-24105 Kiel, Germany. FAU - Rocken, Christoph AU - Rocken C AD - Institute of Pathology, Christian Albrecht University, D-24105 Kiel, Germany. FAU - Hanoch, Tamar AU - Hanoch T AD - Department of Biological Regulation, Weizmann Institute of Science, I-7610001 Rehovot, Israel. FAU - Seger, Rony AU - Seger R AD - Department of Biological Regulation, Weizmann Institute of Science, I-7610001 Rehovot, Israel. FAU - Ebert, Matthias P A AU - Ebert MP AD - Department of Medicine II, Universitatsmedizin Mannheim, Medical Faculty Mannheim, Heidelberg University, D-68167 Mannheim, Germany. FAU - Burgermeister, Elke AU - Burgermeister E AD - Department of Medicine II, Universitatsmedizin Mannheim, Medical Faculty Mannheim, Heidelberg University, D-68167 Mannheim, Germany. LA - eng PT - Journal Article PL - United States TA - Oncotarget JT - Oncotarget JID - 101532965 RN - 0 (IGF2 protein, human) RN - 0 (Insulin) RN - 67763-97-7 (Insulin-Like Growth Factor II) RN - EC 3.1.3.48 (MTMR7 protein, human) RN - EC 3.1.3.48 (Mtmr7 protein, mouse) RN - EC 3.1.3.48 (Protein Tyrosine Phosphatases, Non-Receptor) SB - IM MH - Animals MH - Cell Line, Tumor MH - Cell Proliferation MH - Colorectal Neoplasms/genetics/*metabolism MH - Diabetes Mellitus, Type 2/metabolism MH - Disease Progression MH - Female MH - Gene Expression Profiling MH - *Gene Expression Regulation, Neoplastic MH - Gene Silencing MH - Genomic Imprinting MH - Humans MH - Insulin/*metabolism MH - Insulin-Like Growth Factor II/genetics MH - Male MH - Mice MH - Middle Aged MH - Neoplasm Metastasis MH - Protein Tyrosine Phosphatases, Non-Receptor/*genetics/*metabolism MH - Signal Transduction MH - Tissue Array Analysis MH - Tissue Distribution PMC - PMC5226598 OTO - NOTNLM OT - MTMR7 OT - colorectal cancer OT - insulin OT - myotubularin OT - phosphatase COIS- The authors have nothing to declare. EDAT- 2016/07/14 06:00 MHDA- 2018/01/23 06:00 PMCR- 2016/08/02 CRDT- 2016/07/14 06:00 PHST- 2016/01/13 00:00 [received] PHST- 2016/06/16 00:00 [accepted] PHST- 2016/07/14 06:00 [pubmed] PHST- 2018/01/23 06:00 [medline] PHST- 2016/07/14 06:00 [entrez] PHST- 2016/08/02 00:00 [pmc-release] AID - 10466 [pii] AID - 10.18632/oncotarget.10466 [doi] PST - ppublish SO - Oncotarget. 2016 Aug 2;7(31):50490-50506. doi: 10.18632/oncotarget.10466.